WEBASTO AIR TOP 2000 DIESEL BOAT HEATER ECU CONTROL UNIT 87453B 1322711A. It will fit Webasto Air Top 2000D, Webasto Air Top 2000S heaters. FOR 24v Diesel Webasto heaters only.Electronic Control Unit ECU 87453A, 87453B, 1322711A. A ll items are ready in stock for a quick dispatch. Please check our shop for all Eberspacher and Webasto needs. The item "WEBASTO AIR TOP 2000 DIESEL BOAT WATER HEATER ECU CONTROL UNIT 87453B 1322711A" is in sale since Sunday, February 9, 2020. This item is in the category "Vehicle Parts & Accessories\Motorhome Parts & Accessories\Campervan & Motorhome Parts". The seller is "dieselheaters4u" and is located in Kahramanmaras. This item can be shipped worldwide.